Gloeocapsopsis Geitler ex Komárek, 1993

Holotype species: Gloeocapsopsis crepidinum (Thuret) Geitler ex Komárek

Original publication and holotype designation: Komárek, J. (1993). Validation of the genera Gloeocapsopsis and Asterocapsa (Cyanoprokaryota) with regard to species from Japan, Mexico and Himalayas. Bulletin of the National Science Museum, Tokyo. Series B, Botany 19(1): 19-37.

Description: Forms mat-like structures in liquid cultures that easily disintegrate into single, rounded aggregates of one millimeter. Rarely solitary cells, mostly micro- or macroscopic, irregular, formless, or granular colonies, composed of densely, irregularly aggregated cells or their small groups, surrounded by mucilaginous envelopes. Cells subspherical, more or less irregular rounded in outline, sometimes slightly elongate (never spherical or ellipsoidal) enveloped by thin, narrow, and clearly delimited, sometimes diffluent toward outer periphery, sometimes feebly lamellate, and sometimes colored sheaths, usually following the cell outline. Tetrads sometimes present; nanospores were not observed. Cell division is irregularly in various planes in successive generations. Reproduction by liberation of divided end ensheathed cells from ruptured mother sheaths. The occasional presence of enlarged resting cells with thick, firm, and usually intensely colored envelopes can be observed.

Information contributed by: Emended description by Jung & al. (2021: 4). The most recent alteration to this page was made on 2023-03-06 by M.D. Guiry.

Taxonomic status: This name is of an entity that is currently accepted taxonomically.

Gender: This genus name is currently treated as feminine.

Most recent taxonomic treatment adopted: Strunecký, O., Ivanova, A.P. & Mares, J. (2022 '2023'). An updated classification of cyanobacterial orders and families based on phylogenomic and polyphasic analysis (Review). Journal of Phycology 59(1): 12-51.

Comments: Gloeocapsopsis differs from other coccoid cyanobacterial genera in its dense but not squeezed aggregation of cells that have an irregularly rounded but never spherical or elongated form surrounded by a firm envelope.

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Contributors
Some of the descriptions included in AlgaeBase were originally from the unpublished Encyclopedia of Algal Genera, organised in the 1990s by Dr Bruce Parker on behalf of the Phycological Society of America (PSA) and intended to be published in CD format. These AlgaeBase descriptions are now being continually updated, and each current contributor is identified above. The PSA and AlgaeBase warmly acknowledge the generosity of all past and present contributors and particularly the work of Dr Parker.

Descriptions of chrysophyte genera were subsequently published in J. Kristiansen & H.R. Preisig (eds.). 2001. Encyclopedia of Chrysophyte Genera. Bibliotheca Phycologica 110: 1-260.

Linking to this page: https://www.algaebase.org/search/genus/detail/?genus_id=44101

Citing AlgaeBase
Cite this record as:
M.D. Guiry in Guiry, M.D. & Guiry, G.M. 06 March 2023. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. https://www.algaebase.org; searched on 23 November 2024